511836 has 48 divisors (see below), whose sum is σ = 1368864. Its totient is φ = 147456.

The previous prime is 511831. The next prime is 511843. The reversal of 511836 is 638115.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511831) by changing a digit.

511836 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2556 + ... + 2748.

It is an arithmetic number, because the mean of its divisors is an integer number (28518).

2⁵¹¹⁸³⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 511836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (684432).

511836 is an abundant number, since it is smaller than the sum of its proper divisors (857028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

511836 is a wasteful number, since it uses less digits than its factorization.

511836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230 (or 228 counting only the distinct ones).

The product of its digits is 720, while the sum is 24.

The square root of 511836 is about 715.4271451378. The cubic root of 511836 is about 79.9914574212.

It can be divided in two parts, 51 and 1836, that multiplied together give a square (93636 = 306²).

The spelling of 511836 in words is "five hundred eleven thousand, eight hundred thirty-six".